Buggy code:
public void addExternalEntity ( String name , String publicId , String literalSystemId , String baseSystemId ) throws IOException { } public boolean isExternalEntity ( String entityName ) { } public boolean isEntityDeclInExternalSubset ( String entityName ) { } public void addUnparsedEntity ( String name , String publicId , String systemId , String baseSystemId , String notation ) { } public boolean isUnparsedEntity ( String entityName ) { } public boolean isDeclaredEntity ( String entityName ) { } public XMLInputSource resolveEntity ( XMLResourceIdentifier resourceIdentifier ) throws IOException , XNIException { } public void startEntity ( String entityName , boolean literal ) throws IOException , XNIException { } public void startDocumentEntity ( XMLInputSource xmlInputSource ) throws IOException , XNIException { } public void startDTDEntity ( XMLInputSource xmlInputSource ) throws IOException , XNIException { } public void startExternalSubset ( ) { } public void endExternalSubset ( ) { } public void startEntity ( String name , XMLInputSource xmlInputSource , boolean literal , boolean isExternal ) throws IOException , XNIException { } public String setupCurrentEntity ( String name , XMLInputSource xmlInputSource , boolean literal , boolean isExternal ) throws IOException , XNIException { } public void setScannerVersion ( short version ) { } public XMLEntityScanner getEntityScanner ( ) { } protected Stack fReaderStack = new Stack ( ) ; public void closeReaders ( ) { } public void reset ( XMLComponentManager componentManager ) throws XMLConfigurationException { } public void reset ( ) { } public String [ ] getRecognizedFeatures ( ) { } public void setFeature ( String featureId , boolean state ) throws XMLConfigurationException { } public String [ ] getRecognizedProperties ( ) { } public void setProperty ( String propertyId , Object value ) throws XMLConfigurationException { } public Boolean getFeatureDefault ( String featureId ) { } public Object getPropertyDefault ( String propertyId ) { } private static String gUserDir ; private static URI gUserDirURI ; private static final boolean [ ] gNeedEscaping = new boolean [ 128 ] ; private static final char [ ] gAfterEscaping1 = new char [ 128 ] ; private static final char [ ] gAfterEscaping2 = new char [ 128 ] ; private static final char [ ] gHexChs = new char [ ] { '0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , 'A' , 'B' , 'C' , 'D' , 'E' , 'F' } ; private static PrivilegedAction GET_USER_DIR_SYSTEM_PROPERTY = new PrivilegedAction ( ) { public Object run ( ) { } } ; private static synchronized URI getUserDir ( ) throws MalformedURIException { } public static void absolutizeAgainstUserDir ( URI uri ) throws MalformedURIException { } public static String expandSystemId ( String systemId , String baseSystemId , boolean strict ) throws MalformedURIException { } private static String expandSystemIdStrictOn ( String systemId , String baseSystemId ) throws MalformedURIException { } private static String expandSystemIdStrictOff ( String systemId , String baseSystemId ) throws MalformedURIException { } public static OutputStream createOutputStream ( String uri ) throws IOException { final String expanded = XMLEntityManager . expandSystemId ( uri , null , true ) ; final URL url = new URL ( ( expanded != null ? expanded : uri ) ) ; OutputStream out = null ; String protocol = url . getProtocol ( ) ; String host = url . getHost ( ) ; if ( ( protocol . equals ( "file" ) ) && ( ( ( host == null ) || ( ( host . length ( ) ) == 0 ) ) || ( host . equals ( "localhost" ) ) ) ) { try { out = ( ( OutputStream ) ( AccessController . doPrivileged ( new PrivilegedExceptionAction ( ) { public Object run ( ) throws Exception { File file = new File ( XMLEntityManager . getPathWithoutEscapes ( url . getPath ( ) ) ) ; if ( ! ( file . exists ( ) ) ) { File parent = file . getParentFile ( ) ; if ( ( parent != null ) && ( ! ( parent . exists ( ) ) ) ) { parent . mkdirs ( ) ; } } return new FileOutputStream ( file ) ; } } ) ) ) ; } catch ( PrivilegedActionException pae ) { Exception e = pae . getException ( ) ; if ( e instanceof IOException ) { throw ( ( IOException ) ( e ) ) ; } <START_BUG> throw new IOException ( pae . getMessage ( ) ) ; <END_BUG> } } else { URLConnection urlCon = url . openConnection ( ) ; urlCon . setDoInput ( false ) ; urlCon . setDoOutput ( true ) ; urlCon . setUseCaches ( false ) ; if ( urlCon instanceof HttpURLConnection ) { HttpURLConnection httpCon = ( ( HttpURLConnection ) ( urlCon ) ) ; httpCon . setRequestMethod ( "PUT" ) ; } out = urlCon . getOutputStream ( ) ; } return out ; } private static String getPathWithoutEscapes ( String origPath ) { } void endEntity ( ) throws XNIException { } protected XMLEntityManager . EncodingInfo getEncodingInfo ( byte [ ] b4 , int count ) { } protected Reader createReader ( InputStream inputStream , String encoding , Boolean isBigEndian ) throws IOException { } private Reader createUTF8Reader ( InputStream stream ) { } private Reader createUTF16Reader ( InputStream stream , boolean isBigEndian ) { } private Reader createASCIIReader ( InputStream stream ) { } private Reader createLatin1Reader ( InputStream stream ) { } protected static String fixURI ( String str ) { } Hashtable getDeclaredEntities ( ) { } static final void print ( XMLEntityManager . ScannedEntity currentEntity ) { } public abstract static class Entity { public String name ; public boolean inExternalSubset ; public Entity ( ) { } public Entity ( String name , boolean inExternalSubset ) { } public boolean isEntityDeclInExternalSubset ( ) { } public abstract boolean isExternal ( ) { }

Fix:
throw new IOException ( ( e != null ? e . getMessage ( ) : pae . getMessage ( ) ) ) ;